2785887 has 16 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 1714176.

The previous prime is 2785879. The next prime is 2785891. The reversal of 2785887 is 7885872.

It is a happy number.

2785887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2785887 - 2³ = 2785879 is a prime.

It is a super-2 number, since 2×2785887² = 15522332753538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3618 + ... + 4319.

It is an arithmetic number, because the mean of its divisors is an integer number (277830).

2^2785887 is an apocalyptic number.

2785887 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2785887 is a deficient number, since it is larger than the sum of its proper divisors (1659393).

2785887 is a wasteful number, since it uses less digits than its factorization.

2785887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7959 (or 7953 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 2785887 is about 1669.0976604142. The cubic root of 2785887 is about 140.7087696445.

The spelling of 2785887 in words is "two million, seven hundred eighty-five thousand, eight hundred eighty-seven".